SUSE-SU-2026:2076-1: critical: Security update for samba

SLE-UPDATES null at suse.de
Tue May 26 20:34:24 UTC 2026 

# Security update for samba

Announcement ID: SUSE-SU-2026:2076-1  
Release Date: 2026-05-26T12:36:52Z  
Rating: critical  
References:

  * bsc#1255755
  * bsc#1257200
  * bsc#1259441
  * bsc#1261158
  * bsc#1261159
  * bsc#1261160
  * bsc#1261161
  * bsc#1261163
  * bsc#1261188

  
Cross-References:

  * CVE-2026-1933
  * CVE-2026-2340
  * CVE-2026-3012
  * CVE-2026-3238
  * CVE-2026-4408
  * CVE-2026-4480

  
CVSS scores:

  * CVE-2026-1933 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-1933 ( SUSE ):  7.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-2340 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-2340 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  * CVE-2026-3012 ( SUSE ):  7.6
    CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-3012 ( SUSE ):  8.0 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-3238 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4408 ( SUSE ):  9.4
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-4408 ( SUSE ):  9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4480 ( SUSE ):  10.0
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2026-4480 ( SUSE ):  10.0 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
  * CVE-2026-4480 ( NVD ):  8.5 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

  
Affected Products:

  * Basesystem Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise High Availability Extension 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves six vulnerabilities and has three security fixes can now
be installed.

## Description:

This update for samba fixes the following issues

Security issues:

  * CVE-2026-1933: Missing access check on reparse point operations
    (bsc#1261188).
  * CVE-2026-2340: vfs_worm does not block directory modification (bsc#1261158).
  * CVE-2026-3012: group policy certificate enrollment uses http: // without
    validation (bsc#1261159).
  * CVE-2026-3238: unauthenticated udp packet crashes AD DC nbt server
    (bsc#1261160).
  * CVE-2026-4408: Remote Code Execution in SAMR (bsc#1261163).
  * CVE-2026-4480: Unauthenticated Remote Code Execution (bsc#1261161).

Non security issue:

  * network:samba:STABLE/samba: "use-kerberos=desired" broken / Dolphin requires
    login for Samba shares (bsc#1255755).
  * Generated dynamic profile based on path to special 'printers' share.
    (bsc#1259441).
  * Fix regression "use-kerberos=desired" broken doesn't even try to
    authenticate with kerberos and instead fallsback to NTLM (bsc#1255755).
  * Fix memory leak using cups parsed options and filename allocated when
    processing end of printing job (bsc#1257200).
  * Fix manpage for "net offlinejoin requestodj".
  * Fix "ctdbd socket" documentation in manpage for smb.conf
  * Fix rpc workers with long living clients from growing server memory keytab
    and increasing memory used by workers (bsc#1257200).

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2076=1

  * SUSE Linux Enterprise High Availability Extension 15 SP7  
    zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-2076=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * samba-winbind-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-dcerpc-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-dcerpc-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-winbind-libs-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * python3-ldb-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-tool-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-libs-4.21.10+git.501.277ba349a01-150700.3.26.1
    * libldb-devel-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-gpupdate-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-debugsource-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-python3-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-python3-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-winbind-libs-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-devel-4.21.10+git.501.277ba349a01-150700.3.26.1
    * ldb-tools-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-python3-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-ldb-ldap-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-ldb-ldap-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * ldb-tools-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-4.21.10+git.501.277ba349a01-150700.3.26.1
    * libldb2-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-python3-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-4.21.10+git.501.277ba349a01-150700.3.26.1
    * python3-ldb-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-winbind-4.21.10+git.501.277ba349a01-150700.3.26.1
    * libldb2-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
  * Basesystem Module 15-SP7 (aarch64 x86_64)
    * samba-ceph-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-ceph-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
  * Basesystem Module 15-SP7 (x86_64)
    * libldb2-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-winbind-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * libldb2-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-libs-32bit-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-winbind-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-client-libs-32bit-4.21.10+git.501.277ba349a01-150700.3.26.1
  * SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le
    s390x x86_64)
    * samba-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * samba-debugsource-4.21.10+git.501.277ba349a01-150700.3.26.1
    * ctdb-debuginfo-4.21.10+git.501.277ba349a01-150700.3.26.1
    * ctdb-4.21.10+git.501.277ba349a01-150700.3.26.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-1933.html
  * https://www.suse.com/security/cve/CVE-2026-2340.html
  * https://www.suse.com/security/cve/CVE-2026-3012.html
  * https://www.suse.com/security/cve/CVE-2026-3238.html
  * https://www.suse.com/security/cve/CVE-2026-4408.html
  * https://www.suse.com/security/cve/CVE-2026-4480.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1255755
  * https://bugzilla.suse.com/show_bug.cgi?id=1257200
  * https://bugzilla.suse.com/show_bug.cgi?id=1259441
  * https://bugzilla.suse.com/show_bug.cgi?id=1261158
  * https://bugzilla.suse.com/show_bug.cgi?id=1261159
  * https://bugzilla.suse.com/show_bug.cgi?id=1261160
  * https://bugzilla.suse.com/show_bug.cgi?id=1261161
  * https://bugzilla.suse.com/show_bug.cgi?id=1261163
  * https://bugzilla.suse.com/show_bug.cgi?id=1261188

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